Electrically-driven centrifugal machine



No. 748,771. PATENTED JAN. 5, 1904. H. G. MORRIS.

ELEOTRIGALLY DRIVEN GENTRIFUGAL MACHINE APPLICATION FILED MAY 8, 1903.

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Patented anuary 5, 1904 PATENT OFFICE.

HENRY G. MORRIS, OF PHILADELPHIA, PENNSYLVANIA.

ELECTRICALLY-DRIVEN CENTRIFUGAL MACHINE.

SPECIFICATION forming part of Letters Patent No. 748,771, dated January 5, 1904.

Application filed May 8, 1903- erial No. 156,236. \NO de T0 ail whom it may concern:

Be it known that I, HENRY G. MoREIs, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Electrically-Driven Centrifugal Machines, of which the following is a specification.

Objects of the present invention are, first, to provide for the satisfactory application of alternating-current motors to driving centrifugal machines without the employment of either numerous or complicated parts, and, second, to provide simple, reliable, durable, and efficient means for suspending an alternating-current motor in direct coupled relation to the parts of the centrifugal machine.

To theseand other ends hereinafter set forth the invention, stated in general terms, comprises an electrically-driven centrifugal machine having its internal and external spindles separately connected with the field and armature elements of an alternating-current motor and having one of these elements connected by flexible connections with the suspension-hanger or fixed support; and the invention further comprises the improvements to be presently described and finally claimed.

The nature, characteristic features, and scope of my invention will be more fully understood from the following description,taken in connection with the accompanying drawing, forming part hereof, and in which is illustrated, principally in central section, so much of a centrifugal machine as is necessary to show the present invention in application thereto.

In the drawing, 1is a suspension-hanger, and 2 is an internal spindle having flexible connection with said hanger by reason of the presence of the gum bushing 3 and the bowl-joint 4. This spindle is provided with support 5 for a purpose to be presently described.

6 is an external rotatable spindle sleeved onto the internal spindle. The external spindle and the internal spindle are arranged so that one may rotate in respect to the other, but may not partake of endwise movement in respect to the other, and this is accomplished in a manner well understood and not,

therefore, illustrated in the drawing, and the basket is carried at the lower end of the spindles in a manner which is also well understood, and therefore not requiring illustration or description.

The external spindle 6 terminates at its top beneath the support 5 or the hub which carries it and is provided with the movable element 7 of an alternating'current motor. The fixed element 8 of this alternating-current motor is suspended from or connected with the support 5 in such a Way that the two elements of the alternating-current motor are in operative relation.

9 represents flexible straps attached to the support 5 or some part connected therewith, and they are in turn also attached to some fixed support, conveniently the suspensionhanger 1.

In use the application of current causes rotation of the element 7 of the alternating-current motor and of the external spindle 6, and consequentlyof thebasket. (Notshown.) The straps 9 hold the other element of the alternating-current motor against rotary movement, while at. the same time they permit of the flexible movements of both spindles,which is provided for by the gum bushing.

It will be obvious to those skilled in the art to which myinvention appertains that modifications may be made in detail without departing from the spirit thereof. Hence I do not limit myself to the precise construction and arrangement of parts hereinabove set forth, and illustrated in the accompanying drawing; but,

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An electrically-driven centrifugal ma chine comprising a suspension-hanger, a nonrotatable internal spindle, a rotatable external spindle, the fixed element of an alternating-current motor suspended from the internal spindle, flexible connections between said element and the hanger, and the movable element of an alternating-current motor applied to the external spindle and operatively arranged in respect to the fixed element, substantially as described.

2. An electrically-driven centrifugal ma- ICO chine comprising a suspension-hanger, a nonrotatable internal spindle, a rotatable external spindle, the fixed element of an alternating-current motor suspended from the internal spindle, flexible connections for preventing rotation of said element, and the movable element of an alternating-current motor applied to the external spindle and operativelyarranqed in respect to the fixed element, substantially as described.

3. The combinationin an electrically-driven centrifugal machine of a suspension-hanger, an internal spindle having flexible connection with said hanger and provided with a support, an external rotatable spindle sleeved onto the internal spindle below said support and provided with the movable element of an alternating-current motor, the fixed element of the alternating-current motor suspended from said support in operative relation to the movable element, and flexible connections interposed between the said hanger and the fixed element, substantially as described.

4. The combinationin an electrically-driven centrifugal machine of a suspension-hanger, an internal spindle having, flexible connection with said hanger and provided With a support, an external rotatable spindle sleeved onto the internal spindle below said support and provided With the movable element of an alternating-current motor, the fixed element of the alternating-current motor suspended from said support in operative relation to the movable element, and flexible connections for preventing rotation of the fixed element, substantially as described.

In testimony whereof I have hereunto signed my name.

HENRY G. MORRIS.

In presence of WM. J. JAoKsoN, FRANK E. FRENCH. 

